Flour-bolter brush.



No. 887,545. PATENTED MAY 12, 1908.

E. E. TINKER.

FLOUR BOLTER BRUSH.

APPLICATION FILED MAR. 27, 1907.

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EDWARD E. TINKER, OF KENT, OHIO.

FLOUR-BOLTER BRUSH.

Specification of Letters Patent.

Patented May 12, 1908.

Application filed March 27, 1907. Serial No. 364,879.

To all whom it may concern:

Be it known that I, EDWARD E. TINKER, citizen of the United States, residing at Kent, in the county of Portage and State of Ohio, have invented certain new and useful Improvements in Flour-Bolter Brushes, of which the following is a specification.

This invention appertains to means for preventing clogging of the meshes of fabric or cloth used in milling for bolting flour, the purpose being to provide a brush which will be active, obviate wear upon the bolting cloth and involve a construction which will insure a comparatively longer period of usefulness to the. brush, the latter having a metallic back formed with protuberances to prevent direct wear upon the brush.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings.

While the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereof, still the preferred embodiment is shown in the accompanying drawings, in which:

Figure 1 is a perspective view of a brush for flour bolts embodying the invention. Fig. 2 is a transverse section thereof. Fig. 3 is a detail perspective view of the metal back or reinforcement.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The body 1 of the brush is preferably of rubber or other elastic material capable of rebounding. The brush material 2 is secured in the body 1 in any manner preferably by being molded therein. The body 1 may be of any size and outline, and being of rubber or elastic material obviates injury to the bolting cloth and renders the brush active when its edge strikes a rib or other part of the frame of the sieve or bolt in the operation thereof. A metal back 3 is affixed to the outer side of the body 1 and is preferably embedded therein and is formed with holder protuberances 4 pressed outward therefrom and which protuberances are of rounded form so as to readily glide over the meshes of the wire screen surrounding the bolt. Lugs 5 project from the edges of the metal back 3- and are adapted to secure a firm anchorage in the body 1 and retain the back in place. These lugs 5 are of wedge form and incline to the plane of the back to form an acute angle therewith, hence said lugs when embedded in the material of the body 1, obtain firm anchorage and retain the part 3 in place.

The metal back 3 is of less diameter than the body so as to have a portion of said body rojecting beyond the edge of the back to form an elastic edge portion to insure rebounding of the brush when striking a rib or other part of the frame of the bolt or mechanism with which the device may be employed.

As is well known in milling machinery, the bolt is inclosed by a wire protector having meshes of about one-quarter of an inch, a space being provided between the bolting cloth and the enveloping protector, and in this space is arranged the brush, the tufts or brush material facing inwards towards the bolting cloth, and the metal back being arranged in contact with the enveloping wire protector.

In the operation of the flour bolt, the brush receives a movement which causes the brush material to come in contact with the bolting cloth and thereby prevent clogging of the meshes with the result that the capacity of the machinery is materially increased and the cost of bolting proportionately reduced.

Having thus described is claimed as new is.

The herein described brush for the purpose specified, consisting of a circular body portion of rubber, bristles mounted in the body portion and projecting from one side thereof, a circular sheet metal plate partially embedded in and havin its outer surface flush with the opposite si( e of the body portion, and of a smaller diameter than the same to leave an elastic edge portion around the peripheral portion of the brush, the said sheet metal plate being imperforate throughout and having a plurality of hollow rounded protuberances, the plate being flat throughout its exposed portion except for the said protuberances, and being formed at its edge the invention, what with a plurality of wed e-shaped anchoring impact of any one protuberance with the lugs extending opposite y to said rotubermeshes of the bolt protector. 10 ances and embedded in the brush ody, the In testimony whereof I afiix my signature anchoring lugs alternating with the protuin presence of tWo witnesses.

berances, that is, there being a rotuberance EDWARD E. TINKER. [L. s.] between every two anchoring ugs near the Witnesses: rim of the plate, whereby to equally distrib- SAMUEL B. PANGBoRN,

ute the strain imposed upon the plate by the ABEL CHRISTENSEN. 

